Theoretical approaches to the 3α break-up of 12C

SMITH, Robin, BISHOP, Jack, WHELDON, Carl and KOKALOVA, Tzany (2019). Theoretical approaches to the 3α break-up of 12C. Journal of Physics: Conference Series, 1308 (1), 012021.

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Official URL: https://iopscience.iop.org/article/10.1088/1742-65...
Open Access URL: https://iopscience.iop.org/article/10.1088/1742-65... (Published)
Link to published version:: https://doi.org/10.1088/1742-6596/1308/1/012021

Abstract

Abstract Two recent experiments have indicated that the break-up of the 12C Hoyle state is dominated by the sequential 8Be(g.s.) + α decay channel. The rare direct 3α decay was found to contribute with a branching ratio of less than 0.047% (95% C.L.). However, the ability of experimentalists to successfully disentangle these two competing decay channels relies on accurate theoretical predictions of how they each manifest in phase space distribution of the three break-up α-particles. The following paper reviews the current theoretical approaches to calculating the break-up of the Hoyle state and introduces a semi-classical WKB approach, which adequately reproduces the results of more sophisticated calculations. It is proposed that a more accurate upper limit on this branching ratio may be obtained if these new theoretical results are taken into account when analysing experimental data.

Item Type: Article
Additional Information: ** From IOP Publishing via Jisc Publications Router ** Licence for this article: http://creativecommons.org/licenses/by/3.0/ **Journal IDs: pissn 1742-6588; eissn 1742-6596 **Article IDs: publisher-id: jpcs_1308_1_012021; manuscript: j13081021 **History: open-access 01-08-2019; published 08-2019
Uncontrolled Keywords: Paper
Identification Number: https://doi.org/10.1088/1742-6596/1308/1/012021
Page Range: 012021
SWORD Depositor: Helen Garner
Depositing User: Helen Garner
Date Deposited: 07 Oct 2019 13:24
Last Modified: 07 Oct 2019 13:30
URI: http://shura.shu.ac.uk/id/eprint/25184

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